A Summerville man was under the influence when he rear-ended a moped driver in a fatal wreck early Tuesday, Charleston County sheriff’s deputies said Wednesday.

Sidney E. Son Jr., 43, of Chancellors Drive, was still being treated at Medical University Hospital when sheriff’s deputies charged him with felony driving under the influence, sheriff’s Maj. Jim Brady said.

Witnesses reported that Son sped his SUV past several cars on Highway 61 around midnight on Tuesday.

Then, Son rear-ended a moped and struck a tree as he attempted to merge back into the right lane, Brady said.

The moped’s driver, Dwight Ives, 59, of Summerville, died from injuries sustained in the wreck, Deputy Coroner Kimberly Rhoton said.

The incident happened 4 miles north of the Village Green subdivision.

Paramedics transported Son to MUSC with injuries that did not appear to be life threatening, Brady said.

Investigators who questioned Son at the hospital reported that he smelled of alcohol and had bloodshot eyes.

The incident wasn’t Son’s first DUI arrest.

Charleston police charged Son with driving under the influence in October 2011, State Law Enforcement Division records show. Court records did not indicate the disposition of that incident.

Son was held at the Charleston County jail in lieu of $52,249 bail on the latest charge, Brady said.

Charleston County’s Traffic Division is investigating the wreck, he said.

Reach Christina Elmore at 937-5908 or at Twitter.com/celmorePC.